CVE MCP Server

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It mentions what data the tool retrieves (timeline components) but lacks behavioral details like whether it makes external API calls, typical latency, error handling, or data freshness. The description doesn't contradict annotations (none exist), but it's insufficient for a mutation-free tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is efficiently structured: a clear purpose statement followed by a concise Args section. Every sentence adds value—no redundancy or fluff. It's appropriately sized for a single-parameter tool with a focused function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (building a multi-component timeline) and the presence of an output schema (which handles return values), the description is reasonably complete. It specifies the timeline components and parameter usage. However, without annotations and with 0% schema coverage, it could better address behavioral aspects like data sources or limitations.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It provides the single parameter 'cve_id' with a clear example (CVE-2021-44228), adding meaning beyond the schema's generic string type. However, it doesn't explain format constraints or validation rules, keeping it from a perfect score.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Build a complete CVE lifecycle timeline' with specific components listed (NVD publication date, EPSS score history, CISA KEV addition date, patch lag, exploit window estimation). It distinguishes from siblings like get_cve_summary or lookup_cve by focusing on timeline construction rather than basic lookup or summary.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage context through the listed timeline components, suggesting this tool is for comprehensive CVE analysis rather than quick checks. However, it doesn't explicitly state when to use this vs. alternatives like get_cve_summary or compare_cves, nor does it mention prerequisites or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.